◂
sci
hub

to open science
Welsh, D. J. A.. (1967). An upper bound for the chromatic number of a graph and its application to timetabling problems. The Computer Journal, 10(1), 85–86. doi:10.1093/comjnl/10.1.85 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research